Thrashing-machine



(No Model.)

, I. MEAD.

THRASHING MAGHINE.

No. 418,039. Patented Dec. 24, 1 889.

Q v X: I

N. PETERS. mmummr. war-mm 1c.

UNITED STATES PATENT OFFICE.

ISAAC MEAD, OF BELOIT, \VISOONSIN.

TH RASHING-MA C HIN E.

SPECIFICATION forming part of Letters Patent No. 418,039, dated December 24, 1889.

Application filed August 26, 1839, Serial No. 321,987. (No model.)

To all whom it may concern.-

are clamped firmly to the end of the guide- Be it known that I, ISAAC MEAD, a citizen rod. The free ends of the guide-rods are of the United States, residing at Beloit, in pivoted to sliding heads 17, which slide in the county of Rock and State of Wisconsin, grooved guideways 18, supported by lower 5 have invented certain new and useful Imcross-bars 19 and upper cross-bars 20. The

provements in 'lhrashing-Machines, of which guideways are held separated by screw-bolts the following is a specification. 21, passing up through the lower bar 19 and The object of this invention is the attachthrough the upper bar 20. Screw-nuts 22 ment of a device for raking the straw from are placed on both sides of the upper bar,

ro the cylinder of the thrashing-machine after as clearly shown at Fig. 4. By these screwit has passed under the cylinder on its way nuts I am able to raise or lower the upper to the beaters. bar to adjust it with relation to the sliding This invention consists of a series of teeth heads to take up any wear of the parts. pivoted eccentrically, so that in their revolu- At Fig. 2 I have shown my improvements 15 t-ions they will descend into the straw, carryas applied toa thrashing-machine. The casing it backward away from the cylinder, and ing is placed on top of the thrashing-machine in their upward movement will ascend clear in rear of the cylinder 23, so that as the of the straw. grain leaves the cylinder the teeth 15 will In the accompanying drawings, Figure 1 is alternately descend into the grain and force 20' an isometrical representation of my attachit on its way to the heaters, thereby relieving ment with portions of the outer casing broken the cylinder. 7 away to show the parts more clearly. Fig. 2 My improvements are especially adapted is a section through the outer casing, showfor use in connection with wet grain, when ing the attachment in position on a thrashit isliable to clog the machinery of the thrash- 2 5 ing-machine. Fig. 3 is a vertical section ing-machine. The teeth are controlled in through one of the heads. Fig. 4c is a sectheir movements by the guide-rod as itmoves tion showing the adjustment of the guidein the guideways. A central brace 24 conways. nects the shaft with the casing about mid- I have prepared a casing for the reception way of its length and gives a firm support 0 of my improvements, which consists of verfor the shaft.

tical sides 1, ends 2,b0tto1n 3, and top 4, hav- I claim as my invention- 8 ing hinged lids 5, through which an attend- 1. In a thrashing-machine, the combinaant is able to adjust the parts. lVithin this tion, with a thrashing-cylinder, of ahorizontal casing and near one end is secured a shaft 6, shaft bent in crank form, teeth supported by 3 5 on the projecting end of which is secured a the cranks, upper and lower guideways made pulley 7, which is connected by a belt 8 to a adjustable toward or from each other, a slidpulley 9 of the thrashing-machine, and to ing head movable in the guideways, and a which motion is imparted from a prime connection between the sliding head and mover. This shaft 6 is formed with four teeth, substantially as set forth.

o bends 10, each at right angles to the other. 2. In a thrashing-machine, the combina- At each of these bends is supported a head, tion, witha shaft bent in crank form, of a con- 0 consisting of two sections 11, each having a necting-rod having an eye loosely engaged semicircular recess, within which is placed thereon, a two-part head embracing said shaft the circular end 12 of a guide-rod l3. Bolts and the said eye and clamped to turn with 45 14 are passed through the sections, one on the eye independently of the said shaft, and

each side of the center. Atooth 15 is placed a tooth secured to the said two-part head, 5 on the projecting ends of the bolts, and screwsubstantially as set forth. nuts 16 clamp theparts together. Theshaft6 3. In a thrashing-machine, the combinais free to turn in the head, while the sections tion, with the rotary shaft provided with crank portions, of a connecting-rod having an the tooth to said head, substantially as set eye loosely engaged thereon, a twopart head forth. embracing said shaft, and the said eye to turn with the head independently of the shaft, ISAAC MEAD a tooth, and bolts serving the twofold pur- WVitnesses: pose of clamping the two-part head to the O. H. ORTON, eye of the connecting-rod and for securing P. J. MORRISON. 

